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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2016-08-04 19:59:41 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-07 08:32:44 +0200 |
| commit | e879dae59e057343a15091f55c54a354623d8142 (patch) | |
| tree | 81968889068a6e4d58e0eb4cbce9523502ecae05 /drivers/usb/core | |
| parent | ac069deaaae26656a726af9c45a3dbeeea15c917 (diff) | |
| download | lwn-e879dae59e057343a15091f55c54a354623d8142.tar.gz lwn-e879dae59e057343a15091f55c54a354623d8142.zip | |
dmaengine: usb-dmac: check CHCR.DE bit in usb_dmac_isr_channel()
commit 626d2f07de89bf6be3d7301524d0ab3375b81b9c upstream.
The USB-DMAC's interruption happens even if the CHCR.DE is not set to 1
because CHCR.NULLE is set to 1. So, this driver should call
usb_dmac_isr_transfer_end() if the DE bit is set to 1 only. Otherwise,
the desc is possible to be NULL in the usb_dmac_isr_transfer_end().
Fixes: 0c1c8ff32fa2 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver)
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core')
0 files changed, 0 insertions, 0 deletions